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Squishy Circuits for Kids

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This slide show holds resources I use to help elementary students build electrical circuits. Squishy Circuits are built with Play-Doh or homemade dough. Simple components are used: 6-volt battery packs, LEDs, buzzers, fans, conductive/nonconductive dough.

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Squishy Circuits for Kids

  1. 1. Squishy Circuits learn to build electrical circuits Created by Elisabeth Anderson, Updated March 2019
  2. 2. Introduction
  3. 3. Squishy Circuits Guidelines ● Wash your hands before using dough ● Table surface should be clean (Miss Anderson has washed them) ● Dyed doughs are conductive / non dyed doughs are insulating ● Use only the 4 pack of AA batteries with Squishy Circuits (6 volts) ● Keep materials off the carpet ● Gently push doughs together but do not mix the colors together ● Return doughs to their plastic containers when done ● Share & Get along
  4. 4. Goals Understand or create the following ● a closed circuit; open circuit; short circuit ● battery types and their voltage ● use a volt meter ● the anatomy of an LED & types ○ single color: purple, red, blue, green, yellow, orange ○ bipolar: red/green, green/blue, red/blue ○ color changing (rainbow) ● what it takes to burn up an LED/motor/fan/buzzer= too much voltage ● polarity ● electrode ● electrons ● electrical flow ● resistance ● conductivity ● insulating
  5. 5. Introduction Anodes
  6. 6. Circuit Basics
  7. 7. http://en.wikipedia.org/wiki/Light-emitting_diode Anatomy of LEDs http://squishycircuitsstore.com/LEDs.html
  8. 8. How do LEDs work? Click the vids.
  9. 9. The Electrical Circuit
  10. 10. Types of Circuits Electricity takes the path of least resistance, least resistance can be a shortcut/short cicuit.
  11. 11. Voltage, Current and Resistance Voltage = Current x Resistance Click here to reach the electricity games.
  12. 12. Squishy Battery About Series and Parallel circuits
  13. 13. Make these Electrical Circuits by making a Squishy battery. The LED burns brightly. The LEDs burn less brightly. The LED burns dimly.
  14. 14. Series Circuit & Parallel Circuits
  15. 15. Squishy Battery Points Each electrode has a different affinity (likeness) for electrons Electrodes = galvanized nail + copper wire Each dough slab = cell Length of dough battery determines volts It won’t power much more than an LED Red LED works best
  16. 16. Squishy Animal
  17. 17. More Squishy Things
  18. 18. Motors
  19. 19. LED versus a Bulb
  20. 20. RGB LED controller
  21. 21. Squishy Speaker
  22. 22. Squishy Battery with Arduino & Breadboard
  23. 23. Additional Instructional Resources
  24. 24. More about LEDs http://dangerousprototypes.com/docs/Basic_Light_Emitting_Diode_guide Image by S-kei: CC BY-SA “A light emitting diode consists of two pieces of semiconductor. One P-type with positively charged “holes”, and one N-type with negatively charged electrons. When the P side is connected to power, and N to ground, (forward biased P->N direction) current flows through the diode. The electrons and holes combine, neutralizing each other. This releases energy in the form of light, pretty blue (or whatever) LEDness. The energy is released at a constant wave- length which dictates the color of an LED.”
  25. 25. Types of Batteries 4.5 Volts
  26. 26. Types of Batteries AA
  27. 27. Types of Batteries AAA
  28. 28. Types of Batteries 9-volt
  29. 29. Types of Batteries Lantern
  30. 30. Types of Batteries D

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